can these be used in the oven? probably 300 degree max for oven sterilization

I've never used them in the oven. But probably

Can you just drill a hole in a wide mouth jar lid smaller than the diameter and cram it in?

Yes, you can operate it, this hole needs to be about the same diameter

Sucohans 100 Pcs 13mm Mushrooms Self Healing Injection Ports

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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R423

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧫 Keep your cultures pristine with every injection—seal the deal like a pro!

PRECISION 13 MM FIT - Seamlessly seals 7mm or 1/4 inch openings for airtight culture jars
BULK PACK ADVANTAGE - 100-piece set ensures you never run out during critical lab or cultivation work
SELF HEALING RUBBER - Automatically reseals after each injection to maintain sterile conditions
VERSATILE APPLICATION - Ideal for liquid cultures, supplemented substrates, and grain master jars
HEAT RESISTANT BUTYL MATERIAL - Withstands steam sterilization without compromising integrity

The SUCOHANS 100 Pcs 13mm Mushrooms Self Healing Injection Ports are premium butyl rubber stoppers designed for 7mm or 1/4 inch jar openings. Featuring self-healing technology and excellent heat resistance, they ensure sterile, airtight seals ideal for liquid cultures, supplemented substrates, and grain jars. Trusted by over 1,100 users with a 4.7-star rating, this bulk pack is a must-have for serious cultivators and lab professionals.

Specifications

ASIN	B07FJTZSVL
Best Sellers Rank	#42,385 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #22 in Lab Rubber Stoppers
Customer Reviews	4.7 4.7 out of 5 stars (1,140)
Date First Available	July 12, 2018
Item Weight	1.44 ounces
Item model number	8541898690
Manufacturer	SUCOHANS
Product Dimensions	1.61 x 0.79 x 0.79 inches

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